Seal-lock.



UNITED STATES PATENT EEIQE.

LYMAN P. JEWETT, OF WALPOLE, MASSACHUSETTS.

SEAL-LOCK.

SPECIFICATION forming part of Letters Patent N 0. 672,736, dated April 23, 1901.

Application filed September 10, 1900. Serial. No. 29,519. No model. i

To all whom, it may concern:

Be it known that I, LYMAN P. J EWETT, a citizen of the United States, and a resident of Walpole, county of Norfolk, State of Massachusetts, have invented an Improvement in Seal-Locks, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to seal-locks such as are adapted for use whenever it is desired to look a door and secure the same against manipulation by unauthorized persons, an example of such a use being in the case of a caroor.

The lock comprises a pivotallymounted latch and a cooperating keeper, the latch havin g at its free end a slot terminating in an enlarged portion and the keeper being provided with a flattened portion, which is adapted to enter the slot and when in the enlarged portion thereof to be turned at right angles to the slot, to thereby lock the latch, the said latch having also an apertured lug projecting from its body portion and the keeper having an arm which when the latch is locked is adapted to rest upon the lug, a seal-wire being passed through an'aperture in the arm and an aperture in the lug to hold the arm in its locking position.

In the drawings, Figure l is a perspective view of the lock. Fig. 2 is a detail showing a portion of the latch, and'Fig. 3 is another detail showing a portion of the keeper.

A and B represent in the drawings two portions of a door which are to be locked together or a door and the door-frame, and 3 the keeper 8 to lock the door.

is the latch, pivotally mounted on the portion B by any suitable means, as by a bolt 14. The free end of the latch has a slot 5, which terminates in the enlarged portion 6, the said slot and enlarged portion cooperating with The keeper is provided with the shank 9, which is pivotally mounted in the portion A of the door, the said shank having a flattened portion 10, which when the keeper is turned to the right position is adapted to enter the slot 5 of the latch, the said slot preferably having the widened mouth 7 in order that the flattened portion of the keeper may more readily enter therein. The end of the shank of the keeper terminates in the arm ll,which extends, preferably, at right angles to the shank, as shown in Fig. 3, the end of the arm having an aper ture 16 therein, through which the seal-wire 12 is adapted to pass, as hereinafter described. In the use of my lock the keeper is turned with the flattened portion 10 and the arm 11 extending vertically, as shown in dotted lines in Fig. 2, when the latch 3 may be swung downward until the flattened portion of the keeper has entered the slot 5 and contained in the enlarged portion 6 thereof, when the keeper may be turned down with its arm 11 ex on ding horizontally and parallel to the latch, n which position the flattened portion stands at right angles to the slot 5, and thereby prevents the disengagement of the latch from the keeper. A lug 4 is extended from the body of the latch in such a position that when the keeper is turned to the position shown in Fig. 1 the end of the arm 11 of said keeper will rest upon the lug 4,th us maintaining the keeperin such operative position. Preferably an aperture 15 is provided in the lug 4 in alinement with the aperture 16 in the end of the arm 11, and aseal-wire of ordinary construction is passed through the alined apertures 15 ahd l6 and the seal 13 placed thereon, as usual. When thus in use, the arm is held by the seal-wire so that the keeper is in its operative position to prevent the latch from being disengaged therefrom, and the seal operates to indicate whether any unauthorized person has been tampering with the lock.

By reason of my construction the door is locked against any movement until the seal has been broken and the arm 11 swung into vertical position.

By making my keeper with the shank having the flattened portion and the arm 11 extending therethrough I not only provide means for preventing the latch from being swung about its pivot to be disengaged from the keeper, but by reason of the inner side of the arm bearing against the latch also provide means for preventing the latch frpm being swung outward from the door.

It will be obvious to those skilled in the art that various changes may be made in the construotion of this device without departing from the spirit of my invention, andI therefore reserve for myself the right to make such changes within the scope of the appended claims.

Having fully described my invention, What I claim as new, and desire to secure by Letters Pa'tent, is-

' l. A lock comprising a pivotally-rnounted latch having at its free end a slot terminating in an enlarged portion, a keeper having a flattened shank adapted to enter said slot, and a projection extended from said shank, said keeper being adapted to be turnedwhen the shank thereof has entered the enlarged portion of the slot so as to bring the flattened portion of the shank across the slot, and

means on the latch adapted to engage the pro-- shank thereof has entered the enlarged portion of the slot, so as to bring the flattened portion of the shank across the slot, and

means codperating with the arm to hold 'the keeper in its operative position.

3. A look comprising a pivotally-mounted latch having alug projecting therefrom, and a slot at its free end, said slot terminating in an enlarged p0rtion,,a keeper having a flattened shank adapted to enter the slot, and an arm extending from said shank, said keeper being adapted to be turned when the shank thereof has entered the-enlarged portion of the slot so as to rest upon the lug of the latch.

4. A seal lock comprising a pivotallymounted latch having a lug projecting therefrom and a slot at its free end, said slot terminating in an enlarged portion, a pivotallymounted keeper having a flattened shank which is adapted to enter the slot, said keeper, when its shank has entered theslot being adapted to be turned so that its arm rests upon the lug of the latch, and said arm and lug each having an aperture therein through which a seal-Wire is adapted to pass.

In testimony whereof I have signed my name to this specification in'the presence of two subscribing witnesses.

LYMAN P. JEWETT.

Witnesses:

GEO: W. GREGORY, LoUIs 0. SMITH. 

